A multiport switch for cascaded Ethernet audio/visual (AV) device networking. AV devices are configured with multiple external Ethernet ports and an internal port. These multiple Ethernet ports enable the AV devices to operate as a terminating AV device or as an intermediary switch. With this functionality, a cascading chain of AV devices can be used to support traffic between the connected set of AV devices. Independent links between the sets of devices would not be required as with conventional point-to-point topologies.